Omnisend 1-star reviews: what merchants complain about
35 one- and two-star Shopify App Store reviews with text (33 one-star) of Omnisend Email Marketing & SMS, Email & SMS marketing category, posted 12 Nov 2025 – 6 Oct 2026.
What the reviews complain about
| Complaint | Share | Reviews | All apps |
|---|---|---|---|
| Slow or no support | 48.6% | 17 | 31.2% |
| Charges & refunds | 28.6% | 10 | 13.9% |
| Export, import & migration pain | 20% | 7 | 6.4% |
| Called it a scam or misleading | 17.1% | 6 | 5.8% |
| Bugs & broke the store | 14.3% | 5 | 17.9% |
| Hard to use or set up | 8.6% | 3 | 9.1% |
| Slow store & app speed | 8.6% | 3 | 2.7% |
| Charged after uninstalling/cancelling | 2.9% | 1 | 1.4% |
| Too expensive for what it does | 2.9% | 1 | 4.7% |
A review can match several themes; 20% match none. All apps: 2,418 low-star reviews of 192 Shopify apps in the study.
In merchants’ words
“… Would not recommend to Australian businesses as their support is terrible.”
Shopify App Store review, Sep 2026
“… They are charging us 10K more contacts then Klaviyo was. Support is not helpful and super slow to respond.”
Shopify App Store review, Jun 2026
“… We installed it, connected our domain and DNS records, and imported about 100 contacts—all of whom had opted in through our Shopify store.”
Shopify App Store review, Sep 2026
“Really dissapointed, we are trying to setup and make test, but everything is buggy, and the customer support has zero knowledge how to support un, really unhappy with the experience.”
Shopify App Store review, Jan 2026
“I had a difficult time in trying to get questions answered so that I could decide if this app is for me.”
Shopify App Store review, Aug 2026
Developer replies
30 of 35 got a developer reply (85.7%), median 1.5 days after the review. All apps in the study: 43.9%.
Time on the app before the review
| Time used | Reviews | Share |
|---|---|---|
| Under 1 day | 4 | 11.4% |
| 1–7 days | 6 | 17.1% |
| 8–30 days | 4 | 11.4% |
| 1–12 months | 13 | 37.1% |
| Over 1 year | 8 | 22.9% |
Email & SMS marketing category: shared complaints
AppGap reads the recent 1–3★ merchant reviews of the top ~10 apps in your Shopify App Store category and ranks the complaints they share, with real quotes. One PDF by email within 24–48 h.
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Same category: Shopify Flow · Orderly Emails · Klaviyo · Shopify Messaging
Data and method: Shopify App Store review study · Shopify app bad reviews: what to fix first · All app and plugin pages